US Core Profile Check — check your fhir files free

Finds FHIR R4 resource files still pinned to US Core 3.1.1 or 5.0.1, and the USCDI v3 patient elements they miss. 10 rules, offline, no PHI leaves your machine. Runs entirely in your browser — nothing is uploaded.

{
  "resourceType": "Bundle",
  "id": "legacy-export-set",
  "type": "collection",
  "meta": {
    "versionId": "3"
  },
  "entry": [
    {
      "resource": {
        "resourceType": "Patient",
        "id": "pt-9001",
        "meta": {
          "profile": [
            "http://hl7.org/fhir/us/core/StructureDefinition/us-core-patient|3.1.1"
          ]
        },
        "identifier": [
          {
            "type": {
              "coding": [
                {
                  "system": "http://hl7.org/fhir/v2/0203",
                  "code": "MR"
                }
              ]
            },
            "system": "http://hospital.example.org/mrn",
            "value": "9001"
          }
        ],
        "name": [{ "family": "Nowak", "given": ["Piotr"] }],
        "gender": "male",
        "birthDate": "1965-11-02"
      }
    },
    {
      "resource": {
        "resourceType": "Condition",
        "id": "cond-9001-a",
        "meta": {
          "profile": [
            "http://hl7.org/fhir/us/core/StructureDefinition/us-core-condition|5.0.1"
          ]
        },
        "subject": { "reference": "Patient/pt-9001" }
      }
    },
    {
      "resource": {
        "resourceType": "Observation",
        "id": "obs-9001-a",
        "meta": {
          "profile": [
            "http://hl7.org/fhir/us/core/StructureDefinition/us-core-observation-lab"
          ]
        },
        "status": "final",
        "subject": { "reference": "Patient/pt-9001" }
      }
    },
    {
      "resource": {
        "resourceType": "CapabilityStatement",
        "id": "cap-legacy",
        "status": "active",
        "kind": "instance",
        "fhirVersion": "3.0.2",
        "format": ["json"],
        "instantiates": [
          "http://hl7.org/fhir/STU3/capabilitystatement.html"
        ]
      }
    }
  ]
}

as of

Free here: Scan every FHIR JSON resource in the workspace and see each US Core profile gap on its own line, with the USCDI version that pin actually meets. In the editor: Export the whole workspace as one conformance report file - every resource, its profile pin and the USCDI v3 element it misses - to attach to a certification or customer audit. — that part asks for a licence key.

Same engine as the VS Code extension, byte for byte.